-LRB- CNN -RRB- -- Louis Oosthuizen delivered a masterful third-round display to take control of the Deutsche Bank Championship in Norton , Massachusetts on Sunday to put the South African on the cusp of his first win in the U.S. .

The South African shot a super 63 as he reeled off nine birdies , including a tournament record of seven in a row from the fourth , to move to 19 under par .

That birdie blitz enabled the 2010 British Open champion to move three shots clear of world number one McIlroy , who hit 67 , with Tiger Woods -LRB- 68 -RRB- tied for third with fellow American Dustin Johnson -LRB- 65 -RRB- .

`` Probably the start anyone would dream of on that front nine , '' said Oosthuizen , who once shot a round of 57 at a course near his birthplace of Mossel Bay , South Africa .

`` I made everything , so you get those days where you just look at a putt and you hole it . ''

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One of those nine birdies included a 42-footer on the eighth as the 2012 Masters runner-up secured a tournament-record 29 on the front nine at TPC Boston .

`` I 've put myself in great spots this year , had a good chance at Houston , had a good chance at Augusta , a few other tournaments , WGC earlier , '' added Oosthuizen , referring to how close he has come to winning in the U.S.

`` I 'm just going to keep on doing what I 'm doing . The more I 'm in the position on the back nine on Sunday , or in this case on a Monday , then it 's going to happen sooner or later .

Oostuizen 's playing partner McIlroy , who had led by one stroke at the start of Sunday , had nothing but praise for the South African 's round .

`` He 's very explosive , and he did n't really put a foot wrong , '' said McIlroy .

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Louis Oosthuizen takes three-shot lead into Monday 's final round of Deutsche Bank Championship

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South African cards 63 in third round , including nine birdies

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Oostuizen delivers tournament-record 29 on the front nine

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South African is searching for his first win in the U.S.